Riello MST 30-T4

The Riello Multi Sentry 30kVA/27kW uninterruptible power supply from Critical Power Supplies is an on-line double-conversion UPS with a built-in battery pack designed to give 6 minutes runtime at full load. The standard runtime can be extended using additional battery extension packs. The UPS has a three phase input and output. Typical applications: Blade servers, comms rooms, server rooms and datacentres.

Multi Sentry has a very high operating efficiency (94%), high input power factor, advanced battery management and can work in one of several operating modes: On-line, Economy, Smart active and Standby/Off, as well as operating as a frequency converter.

Features

Multi Sentry UPS have been designed for an easy install, especially on sites with limited power capacity available, a generator and harmonic compatibility problems. Typical features include:

The UPS also acts as a high performance filter to protect its supplies from load induced harmonics and reactive power.

Multi Sentry has a unique battery care system to optimise battery performance, extend working life and guarantee the UPS is fit to deliver its full-rated runtime when called upon to do so – in the event of a complete mains power failure. The UPS is designed to operate with a range of battery types: VRLAAGM and GEL lead-acid batteries including open-vented types, in addition to Ni-Cads.

Specific Battery Care features include:

- One-level recharge to meet the requirements of the most common VRLAAGM batteries.- Two voltage level recharge meeting the IU characteristic.- Restricted charging to reduce electrolyte consumption and extend the life of VRLA batteries.- Temperature compensation: to avoid excessive voltage being applied to the batteries in a high ambient.- Built-in battery testing to enable predicted failure reports and detect performance degradation.- Deep battery discharge protection: to prevent over discharging the battery set.- Low AC ripple current, achieved using a high-frequency battery charger.- Wide input voltage range, with a rectifier that can work down to less than 40% of its nominal supply rating.

Multi Sentry can be used for a wide range of applications with several customisation options and accessories providing flexibility and a choice of performance levels: